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Chapel Point wave buoy daily means for Sep 2012

Daily means from the Chapel Point wave buoy for Sep 2012, including available wave height, period, direction, wind and sea temperature data.

Last observation shown

Data available:  to 

Monthly means for

Latest

Period Summary

Programmatically generated summary. Hog Says

1,440 wave-buoy observations covered all 30 days. Typical wave height was 2 ft (10th–90th percentile 1–3.6 ft), while mean peak wave period was 5.4 seconds (10th–90th percentile 2.8–10 seconds). Mean water temperature was 15.9°C (10th–90th percentile 13.6–17.5°C). 11 of 5,760 checked values (0.2%) were excluded by quality control.

Generated only from the observations and comparisons shown on this page.

Typical Significant Wave Height

2ft
Mean: 2.2 ft
P10–P90: 1 — 3.6 ft
Recorded extremes

0.4 — 8.2 ft

Mean Observed Wave Period

5.4secs
P10–P90: 2.8 — 10secs
Recorded extremes

1.7 — 13.3secs

Observed Wave Direction

Variable

Circular concentration: 28%

Most common: NNE (31%) · circular mean NE

Mean Water Temperature

15.9°C
P10–P90: 13.6 — 17.5°C
Recorded extremes

12.9 — 18.2°C

Chart showing grouped wave observations for Chapel Point. Use the table on this page for a text version of the same measurements. To open hourly observations, use a linked day name in the table.

About Chapel Point wave buoy

Chapel Point is a Channel Coastal Observatory wave station off the Lincolnshire coast near Chapel St Leonards. Its shallow North Sea setting records conditions approaching a low-lying, heavily managed sandy frontage north of Skegness, supporting flood and erosion monitoring.

Its current data source reports wave height, wave period, wave direction, directional spread, wave power and sea temperature.

Metrics are rows; days run left to right.
Chapel Point wave buoy daily means Sep 2012Last observation shown
Metric
Mean significant wave height (ft)211122111322332212323345423223
Mean maximum wave height (ft)------------------------------
Mean peak period (s)74334811107454646434685668475444
Mean zero-crossing period (s)333334343333433333434444444333
Mean energy period (s)------------------------------
Mean wave power, kilowatts per metre------------------------------
Mean peak wave directionNEconcentration 77%SEconcentration 43%NEconcentration 50%Econcentration 33%Nconcentration 98%NEconcentration 60%NNEconcentration 100%NNEconcentration 99%Econcentration 44%Sconcentration 99%NWconcentration 33%Variableconcentration 15%NNEconcentration 74%Variableconcentration 26%NNEconcentration 96%Sconcentration 89%SSWconcentration 75%Variableconcentration 10%NNEconcentration 99%NEconcentration 73%NEconcentration 39%NNEconcentration 99%ENEconcentration 87%Econcentration 84%Sconcentration 98%ENEconcentration 70%NNEconcentration 98%Sconcentration 62%WNWconcentration 32%Sconcentration 97%
Mean directional spread (°)34.040.738.043.528.528.928.126.428.417.725.828.526.024.531.231.439.328.527.733.528.224.125.222.418.627.425.329.833.924.2
Mean water temperature(°C)17.317.317.317.417.417.417.417.517.717.617.417.016.716.516.316.216.115.815.415.114.814.514.314.213.813.713.713.613.413.3

Swipe sideways to see more days.

Wave metric colour key

Colours move through the scale as each number increases. They do not by themselves mean that conditions are good, safe or suitable for you.

Wave & swell height0–40+ ft
Wave & swell period0–22+ s
Wind speed0–75 mph

The displayed numbers remain the source of truth; colour is an additional visual cue.

What does buoy wave power mean?

kW/m means kilowatts of wave power per metre of wave crest. It describes the rate at which the observed sea state carries energy past the buoy.

Unlike the shore-directed forecast value, buoy wave power is the total power at the observation point. It is not projected towards a particular beach and does not predict breaking wave height.

In deep water, wave power can be calculated with:

P is approximately 0.49 times significant wave height squared times wave energy period.

P is power in kW/m, Hs is significant wave height in metres, and Te is wave energy period in seconds.

  • Provider-reported power is used when available.
  • Otherwise, a value is calculated only when both significant height and a genuine energy period are available. The ≈ symbol marks calculated values.
  • A dash is shown instead of substituting peak, Tm02, zero-crossing or other period measurements.
  • Daily and monthly figures use the mean of hourly-normalized observation power values; they are not calculated from mean height and period.

Wave direction, spectrum, water depth and local bathymetry still matter. Wave power is best read alongside height, period and direction rather than as a standalone surf-quality score.

The observation data displayed on this page is from the Regional Coastal Monitoring Programme.

Learn how SurfHog combines, checks and summarizes observations in the data and methodology notes.

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